Here is the salient concluding paragraph of the paper: "[T]he gas 'revolution' has important implications for the direction and intensity of national efforts to develop and deploy low-emission technologies, like CCS [carbon capture and storage] for coal and gas. With nothing more than regulatory policies of the type and stringency simulated here there is no market for these technologies, and the shale gas reduces interest even further. Under more stringent GHG [greenhouse gas] targets these technologies are needed, but the shale gas delays their market role by up to two decades. Thus in the shale boom there is the risk of stunting these programs altogether. While taking advantage of this gift in the short run, treating gas a 'bridge' to a low-carbon future, it is crucial not to allow the greater ease of the near-term task to erode efforts to prepare a landing at the other end of the bridge."